Best sounding full range driver speaker ever!

HAL · « **Reply #140 on:** 17 Dec 2012, 02:02 am »

My pair of The Monolith's are complete:

Here is a set of measurements of the Dayton 8" driver on-axis far-field installed in the baffle as in the picture.

Next onto the digital crossover work.

Guy 13 · « **Reply #141 on:** 17 Dec 2012, 11:05 am »

Hi HAL and all Audio Circle members.
Even if you are not a professional photographer,
I am sure you can do a better picture than this one.
This picture does not do justice to your beautiful work of art.
Please try again and at the same time,
can we also see the back side?
I would sure like to compare side by side your speakers with my GR Research V1.
Guy 13

HAL · « **Reply #142 on:** 17 Dec 2012, 11:49 am »

Guy,
Where the speakers are located is dark and hard to get a good picture even with a flash. That picture had to be corrected to look that bright. The better pictures are earlier in the thread that Jon and I took.

The Monolith back is simply raw drivers coming out with connectors ready for wiring.

If I take them outside for more measurements, will try taking more pictures.

Guy 13 · « **Reply #143 on:** 17 Dec 2012, 11:58 am »

Quote from: HAL on 17 Dec 2012, 11:49 am

Guy,
Where the speakers are located is dark and hard to get a good picture even with a flash. That picture had to be corrected to look that bright. The better pictures are earlier in the thread that Jon and I took.

The Monolith back is simply raw drivers coming out with connectors ready for wiring.

If I take them outside for more measurements, will try taking more pictures.

Hi HAL and all Audio Circle members.

Thanks.
Look forward to see better pictures.
Guy 13

MarvinTheMartian · « **Reply #144 on:** 19 Dec 2012, 03:11 pm »

Quote from: jparkhur on 6 Nov 2012, 01:55 am

This may help.. Jon Parkhurst

Jon
The top view shows a very shallow "U" frame, would the bass response be further improved by a deeper "H" frame? I was thinking a variable width "H" frame, narrow at the top to maintain the 200Hz upper limit and wider at the bottom to assist bass response. Imagine your side / support panels with a slight "A" shape, +/- 100mm for the bottom woofer and narrowing to nothing just above the top woofer.

Shawn ... Thinking outside the box.

jparkhur · « **Reply #145 on:** 19 Dec 2012, 03:45 pm »

Yes, with working with a couple more variables... greater H frame would be a lower response. I think Danny has talked about that somewhere in one of these threads. You have to be careful of the negatives of adding to much to the back as it may cause bad response issues.

JP

One of the secondary objectives was to have a small baffle speaker with huge potential. Some people can't have a 14 inch front baffle speaker for various reasons.

MarvinTheMartian · « **Reply #146 on:** 19 Dec 2012, 06:48 pm »

JP
I really meant to say variable depth "H" frame, keep the current constant front baffle width and taper your side panels in from bottom to top. This would keep the top woofer operating in it's current 200Hz optimized configuration. The bottom two woofers would see progressively deeper "H" frames to augment the deep bass response. The best of both worlds, unless of course I am completely missing the servo OB basics. ( quite probable since I have never seen this done before : )

Shawn ... Dreaming outside the box

jparkhur · « **Reply #147 on:** 19 Dec 2012, 06:49 pm »

Yes, what you asked and what i attempted to say are the same thing. Your are correct...

JP

Danny Richie · « **Reply #148 on:** 19 Dec 2012, 08:03 pm »

From the test I ran on these a little deeper U frame was recommended for the next version.

An H frame can be used as well if it is no more than 5" deep on each side, but it looses some curb appeal.

jcotner · « **Reply #149 on:** 4 Jan 2013, 05:41 am »

What's new Hal. We haven't heard much about this for a few weeks.
You in the midst of IIRs and FIRs or some other fun exercise?
I was just getting ready to start work on a new processor and
was curious about how your project was going.

HAL · « **Reply #150 on:** 4 Jan 2013, 12:49 pm »

The basic crossover is done. Waiting on the prototype servo amps to finish the measurements.

Once that is done will try the correction coefficients. The four channel DAC is waiting on the pulse splitter to be completed.

Been on vacation with family for two weeks. Will get more time starting next week.

HAL · « **Reply #151 on:** 19 Jan 2013, 04:30 pm »

The Rythmik Servo amps for the 8" servos in The Monoliths have arrived. Will be wiring them up on Monday to start the next part of the measurements.

Ed VB · « **Reply #152 on:** 19 Jan 2013, 06:16 pm »

Are these the new style amps? Can you post a picture of one?

HAL · « **Reply #153 on:** 19 Jan 2013, 07:34 pm »

Yes, they are the new style servo amps.

Will check with Brian to make sure it is ok to post pictures.

HAL · « **Reply #154 on:** 24 Jan 2013, 02:45 pm »

Here is a picture of the new servo amp prototype from Rythmik.

Brian explains the difference between the prototype and production unit:
" the input jacks will be changed to one RCA plus one mini-XLR. The reason for minXLR is due to space limitation."

The black finished wood cabinet is from jparkhur for the amp.

rollo · « **Reply #155 on:** 24 Jan 2013, 05:26 pm »

Looking good Hal. The IEC shown appears ungrounded is that so ?

charles

HAL · « **Reply #156 on:** 24 Jan 2013, 05:28 pm »

Yes, the prototypes here are ungrounded.

Ric Schultz · « **Reply #157 on:** 25 Jan 2013, 07:49 pm »

What is the height, width and depth of the new servo amps? And weight? I am sure Danny will have info shortly but have a customer building some speakers and would like to know in advance. Thanks.

HAL · « **Reply #158 on:** 26 Jan 2013, 04:38 pm »

Quote from: Ric Schultz on 25 Jan 2013, 07:49 pm

What is the height, width and depth of the new servo amps? And weight? I am sure Danny will have info shortly but have a customer building some speakers and would like to know in advance. Thanks.

My measurements of the servo amps here show 7.75" wide x 10.25" long x 3.5" deep.

drmike · « **Reply #159 on:** 27 Jan 2013, 03:09 pm »

what are the measurements of the baffles?
thanks,
drmike